Recovering treatment method of waste-flue-gas denitration catalyst

A denitration catalyst, recycling and processing technology, which is applied in the field of recycling and processing waste flue gas denitration catalysts, can solve problems such as unfavorable environmental protection, improvement of comprehensive benefits, reduction of resource recycling, solid waste pollution, etc. The effect of large centralized processing capacity and high recycling rate

Inactive Publication Date: 2015-06-24
无锡华光新动力环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the calculation of the service life of the denitrification catalyst, around 2016, my country will begin to produce a large amount of waste flue gas denitrification catalyst, and it will increase year by year. After 2020, it will stabilize at 250,000-300,000 m 3 / year (approximately 130,000-150,000 tons / year), the denitrification catalyst after failure is usually discarded, which not only causes solid waste pollution, but also reduces the recycling of resources, increases production costs, wastes energy, and is not conducive to the environment Protection and improvement of comprehensive benefits

Method used

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  • Recovering treatment method of waste-flue-gas denitration catalyst

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Effect test

Embodiment 1

[0017] A method for recovering and treating waste flue gas denitrification catalysts, comprising the following process steps:

[0018] (1) Unpacking and crushing: Use unpacking equipment to disassemble the iron box of the denitrification catalyst module, take out the waste flue gas denitrification catalyst, and use the crushing equipment to finely pulverize the waste flue gas denitrification catalyst to more than 600 mesh, preferably 600 mesh to 700 mesh;

[0019] (2) Preparation of cleaning solution: take 0.1% of the cleaning solution as the penetration enhancer JFC, 0.1% of the cleaning solution as the emulsifier OP-10, and 0.1% of the cleaning solution as the leveling agent Pingpingjiao , sulfuric acid accounting for 1% of the mass percentage of the cleaning solution, 0.1% of the corrosion inhibitor accounting for the mass percentage of the cleaning solution, and the balance being deionized water, mixed with liquid mixing equipment and mechanically stirred for 20 minutes to ...

Embodiment 2

[0026] A method for recovering and treating waste flue gas denitrification catalysts, comprising the following process steps:

[0027] (1) Unpacking and crushing: Use unpacking equipment to disassemble the iron box of the denitrification catalyst module, take out the waste flue gas denitrification catalyst, and use the crushing equipment to finely pulverize the waste flue gas denitrification catalyst to more than 600 mesh, preferably 600 mesh to 700 mesh;

[0028] (2) Preparation of cleaning solution: Take 0.5% of the cleaning solution as penetration enhancer JFC, 0.5% of cleaning solution as emulsifier OP-10, and 0.5% of cleaning solution as leveling agent Pingpingjiao , sulfuric acid accounting for 5% of the mass percentage of the cleaning solution, 0.5% of the corrosion inhibitor accounting for the mass percentage of the cleaning solution, and the balance being deionized water, mixed with liquid mixing equipment and mechanically stirred for 30 minutes to obtain the cleaning ...

Embodiment 3

[0035] A method for recovering and treating waste flue gas denitrification catalysts, comprising the following process steps:

[0036] (1) Unpacking and crushing: Use unpacking equipment to disassemble the iron box of the denitrification catalyst module, take out the waste flue gas denitrification catalyst, and use the crushing equipment to finely pulverize the waste flue gas denitrification catalyst to more than 600 mesh, preferably 600 mesh to 700 mesh;

[0037] (2) Preparation of cleaning solution: Take the penetration enhancer JFC accounting for 1% of the cleaning solution, the emulsifier OP-10 accounting for 1% of the cleaning solution, and the leveling agent Pingpingjia O accounting for 1% of the cleaning solution. , sulfuric acid accounting for 10% of the mass percentage of the cleaning liquid, corrosion inhibitor accounting for 1% of the mass percentage of the cleaning liquid, and the balance being deionized water, mixed with liquid mixing equipment and mechanically sti...

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Abstract

The invention relates to a recovering treatment method of a waste-flue-gas denitration catalyst. The recovering treatment method comprises the following processes: (1) crushing; (2) preparing cleaning liquid; (3) cleaning and removing impurities; (4) separating solid from the liquid; and (5) drying and treating. The recovering treatment method has the beneficial effects that a great amount of waste-flue-gas denitration catalyst can be treated in a concentrated manner, and the reutilization of the waste-flue-gas denitration catalyst can be realized after the waste-flue-gas denitration catalyst is treated by the processes of crushing, preparing cleaning liquid, cleaning and removing impurities, separating solid from the liquid, drying and treating; and the waste-flue-gas denitration catalyst has the advantages of high recovering treatment and utilization rate, low industrialization difficulty, large concentrated treatment amount and the like; the waste-flue-gas denitration catalyst is recovered and treated, and can be used for producing a denitration catalyst as a production material, so that the pollution of solid wastes can be reduced, and simultaneously the benefits of recycling resources, reducing the cost, saving the energy, enhancing environmental-protection control and improving the comprehensive benefit also can be achieved.

Description

technical field [0001] The invention relates to the technical field of denitrification catalyst treatment, in particular to a recovery and treatment method for waste flue gas denitration catalyst. Background technique [0002] Selective catalytic reduction (SCR) flue gas denitrification technology is currently recognized as the most effective method for controlling nitrogen oxide emissions from coal-fired power plants and is widely used in coal-fired power plants in my country. According to statistics, SCR accounts for 90% of the capacity of flue gas denitrification units that have been put into operation. The technical core of the SCR flue gas denitrification process is the denitrification catalyst. Its chemical life (that is, the fresh denitrification catalyst is used to deactivation) is designed to be 24000h. Generally, after three years of operation, it needs to be replaced due to its failure. According to the calculation of the service life of the denitrification catal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 赵建新钱军孙志翱尤毓敏高宽峰陈玲孟德海施文杰马俊
Owner 无锡华光新动力环保科技股份有限公司
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